Which singer recorded the pop version associated with McDonald's “I'm Lovin' It” campaign?

Justin Timberlake recorded the pop version associated with McDonald's “I'm Lovin' It” campaign.

The campaign launched in 2003 and used a catchy musical identity to support the slogan across international advertising. Timberlake's recording helped connect the commercial phrase with contemporary pop culture, particularly among younger audiences. The song was not simply a conventional standalone hit single; it was part of a broader advertising and branding project.

The campaign was created for McDonald's by advertising professionals and music collaborators, then adapted for different markets. This international structure is why some advertisements used different languages, singers, or arrangements while retaining the same central phrase.

Barry Manilow is a common mix-up because he wrote music for McDonald's earlier “You Deserve a Break Today” advertising. Pharrell Williams and Beyoncé have also worked with major brands, but neither recorded the pop version identified with this McDonald's campaign.